Any thief who tries to steal a laptop or notebook computer fitted with the
Defcon 1 alarm is in for a shock. Defcon 1 uses a motion sensor to detect when
the computer is moved around. Unless the correct password is entered to disable
it first, a 110-decibel alarm shriek is set off.
More from ¿ìè¶ÌÊÓÆµ
Explore the latest news, articles and features
Popular articles
Trending ¿ìè¶ÌÊÓÆµ articles
1
Pancreatic cancer halted by virus injection in three patients
2
Does gravity create reality? A shocking path to a theory of everything
3
The best new science-fiction books of June 2026
4
Photons behave very strangely if you try to cut them
5
Mathematical AI helps researchers crack 50-year-old problem
6
Glaciers in the 'roof of the world' have suddenly started melting
7
Millions of planets might form around supermassive black holes
8
Mathematicians stunned by AI's biggest breakthrough in mathematics yet
9
Earliest use of anaesthetics uncovered in Chinese doctor’s tomb
10
Q-Day could destroy bitcoin – and our retirement savings



